# handout_calc_3.pdf - Pharmacy Technician Web Based...

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1Pharmacy TechnicianWeb Based Calculations Review MODULE 32009P R ES E N T E D BY:J e n i fe r M a k i , P h a r m DW I T H CO N T R I B U T I O N S F RO M :B r e t t S a l e m , P h a r m DD e r e k L o m a s , P h a r m D© 2009 The Collaborative Education InstituteObjectivesyCalculate IV flow rates.yUnderstand ratio or percent strength of a medication expressed as weight/weight, weight/volume or volume/volume.yCalculate powder volume to prepare solutions.yUnderstand how to prepare solutions using the alligation method.yUtilize dilutions so that medications can be measured more accurately and easily.CompoundingyThe preparation, mixing, assembling, packaging, or labeling of a drug in accordance with a licensed practitioner’s prescription. This includes both sterile and non-sterile productsyPharmacy technicians may often aid the pharmacist in compounding. The role of the pharmacy technician includes:Calculation of the correct amount of product to be mixedCalculation of dose to be given to the patientWeighing and mixing the productCompoundingyA pharmacy technician may aid the pharmacist in making:SuppositoriesCapsulesCreamsOintmentsIV’sTPNReducing and Enlarging FormulasyUsing the principles of ratios and proportions for extemporaneous compoundingyExample: Zinc Oxide 50gmPine Tar120gmPetrolatum264gmTotal Weight454gm = 1lbReducing and Enlarging Formulas How much pine tar would be required to prepare 1kg of ointment?1kg = 1,000gm120gm= __ x___454gm1,000gmX = 264.3 gm pine tar
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How much zinc oxide would be required to prepare 100gm of ointment?